CLK Figure Q2 illustrates the timing diagram of an instruction of the 8085 microprocessor. www www...
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CLK Figure Q2 illustrates the timing diagram of an instruction of the 8085 microprocessor. www www IX Ag-A15 ADO-AD7 FFH OPCODE ALE RD IO/M, S0, S1 WR (ii) 111 27H XX IO/M=0, S0-1, $1=1 28H 1 00H 30H IO/M=0, S0-0, S1=1 28H 01н 30H IO/M=0, S0-0, $1=1 30H 30H 30H IO/M=0, S0-0, $1=1 30H 31H FEH IO/M=0, S0-0, $1=1 Figure Q2 Identify the sequence of machine cycles for this instruction. [4 marks] Identify an instruction whose timing diagram could possibly be represented in Figure Q2 and the memory location(s) where it is stored. Justify your answer. [5 marks] Which register(s) and memory location(s), if any, is (are) affected by this instruction [3 marks] and how? CLK Figure Q2 illustrates the timing diagram of an instruction of the 8085 microprocessor. www www IX Ag-A15 ADO-AD7 FFH OPCODE ALE RD IO/M, S0, S1 WR (ii) 111 27H XX IO/M=0, S0-1, $1=1 28H 1 00H 30H IO/M=0, S0-0, S1=1 28H 01н 30H IO/M=0, S0-0, $1=1 30H 30H 30H IO/M=0, S0-0, $1=1 30H 31H FEH IO/M=0, S0-0, $1=1 Figure Q2 Identify the sequence of machine cycles for this instruction. [4 marks] Identify an instruction whose timing diagram could possibly be represented in Figure Q2 and the memory location(s) where it is stored. Justify your answer. [5 marks] Which register(s) and memory location(s), if any, is (are) affected by this instruction [3 marks] and how?
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Related Book For
Digital Systems Principles And Application
ISBN: 9780134220130
12th Edition
Authors: Ronald Tocci, Neal Widmer, Gregory Moss
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